Gyratory structure.



G. w. con/ms; GYRATORY STRUCTURE. APPLICATION FILED JUNE28. I910.

Patented July 25,1916.

2 SHEETS-SHEET 1.

INVENTOR. ewye lfu/mr A TTORNE Y.

G. W. COMBS.

GYRATURY STRUCTURE.

APPLICATION FILED JUNE 28. 1910.

Patented July 25; 1916;

2 SHEETS-SHEET 2.

IN VEN Tale.

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H I a 'I/VITNESSES M% WI.

GEORGE W. COIVIBS, OF LEAVEMWOETH, KANSAS.

GYRATOBY STRUCTURE.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed June 28, 1910. Serial No. 569,404.

To all whom it may concern Be it known that I, Gnonon WV. Cones, acitizen of the United States, residing at Leavenworth, in the county ofLeavenworth and State of Kansas, have invented certain new and usefulImprovements in Gyratory Structures, of which the following is aspecification.

This invention relates to improvements in gyratory structures, such forinstance as bolters, sifters, screeners, sorting-machines, etc, and thepresent invention relates particularly to novel means for driving thestructure and restraining the same from abnormal throw, to the end thatit may properly perform its function without subjecting the buildingcontaining the same to undue strain or vibration.

In the accompanying drawings, Figure 1 shows a side elevation partly insection of a gyratory structure, provided with my improvements. Fig. 2is a horizontal section 011 line IIII of Fig. 1. Fig. 3 is an en largedbroken section on line IIIIII of Fig. 1. Fig. 4c is a vertical sectionof a modified form of the invention.

1 designates the gyratory structure, which consists of a pair ofsieve-boxes 2, united by bridge-trees 3, having centrally-disposedbearings 41:. Sieve-boxes 2 are freely supported from the ceiling 5 byrods 6 which also prevent said sieve-boxes from rotating with acentrally-disposed vertically-posi tioned shaft 7. Shaft 7 is j ournaledin bearings 1, and provided with eccentric-weights 8 which in operationimpart a gyratory motion to the structure. The weight of shaft 7 issupported by an eccentric-pin 9, constituting the center of rotation andmounted upon a step-bearing 10 on the floor of the building, anantifrictional ball 11 being in terposed between the lower end of saideccentric-pin and the step-bearing, over the surface of which theeccentric-pin is free to move laterally in any direction. Ball 11 isretained in position beneath the eccentricpin by a sleeve 11 secured tothe lower portion of said eccentric-pin. Bearing 10 has anupwardly-extending wall .12, forming a lubricant-chamber 13 in whichball 11 operates, said lubricant-chamber being closed by aloosely-mounted cover 1% through which the eccentric-pin extends.

15 designates a pulley keyed or otherwise fixedly-mounted to theeccentric-pin to rotate the same.

16 designates a support on the floor of the building near pulley l5, andcomprising an idler 17, an adj ustable stand 18 carrying said idler, anda base-plate 19 containing setscrews 20 for adjusting stand 18laterally, and set-screws 21 for adjusting said stand longitudinally.After such adjustments have been made, the stand is reliably locked onbase-plate 19 by bolts 22 extending through slots and 24: in the lowerportion of the stand and the base-plate, respectively.

25 designates a belt or other flexible endless member running aroundpulley 15 and idler 17 to assist in restraining the structure fromabnormal throw by assisting in holding the eccentric-pin 9 centrallywithin the lubricant-chamber 13, said belt being kept taut by pro yeradjustment of idler 17 and its stand 18.

26 designates an endless transmission member or belt which drives pulleyl5 and assists belt 25 in restraining the structure from abnormal throwby tending to hold eccentric-pin 9 centrally within thelubricant-chamber 13. Belt 26 runs over a pair of idlers 27 to astationary driver 28 mounted upon a shaft 29. Idlers 27 are carried uponstands 30 mounted upon base-plates 31, provided with set-screws 32 toadjust the stand longitudinally for the purpose of ten sioning belt 26and set-screws 33 for adjusting stands 30 laterally to assist inadjusting eccentric-pin 9 centrally within the lubri cant-chamber 13.Belt 25 is laterally adjustable for the same purpose, for instance, if Cbe the tight or pulling side of belt 26, it would have a tendency toforce the structure away from said side if not counteracted by adjustingbelt 25 to the dotted position A (Fig. 2), and if D be the pulling sideof belt 26, it will be necessary to adjust belt 25 to the dottedposition B. Driver 28 is slidably-mounted upon shaft 29 so that it maybe adjusted in proper relation to idlers 27 when the stands of thelatter are adjusted longitudinally, and after such adjustment of saiddriver, it is looked upon the shaft by a set-screw 34:, or othersuitable means.

In the modified form disclosed by Fig. 4, the construction and operationis similar to that disclosed in the preferred form, the chief differencebeing that a four-box structure driven by a crank-shaft, similar to thatdisclosed by U. S. Letters Patent No. 12,894: (reissue) is substitutedfor the two-box structure and shaft disclosed by Fig. 1. Re-

ferring in detail to said modified form: 1 designates the gyratorystructure consisting of sieve-boxes 2 connected in pairs by bridge-trees3 having centrally-disposed bearings 4 Sieve-boxes 2 arefreely-supported from the ceiling 5 by rods 6, which also prevent saidsieve-boxes from rotating with a crank-shaft 7 j ournal'ed in bearings Pand supported by a step-bearing 10". Shaft 7 is driven by a pulley fixedthereto,f which in turn is driven by an endless member 26, extendingaround said pulley and a stationary driver 28 which latter is adjustablymounted upon a shaft 29, to which it is secured by a set-screw 34?. Belt26 extends over a pair of idlers 27 carried by two stands 80 mountedupon base-plates 81 provided with set-screws 32 and 33 for adjustingsaid stands laterally and longitudinally to properly adjust and tensionbelt 26, which not only drives pulley 15, but assists in restraining thestructure from abnormal throw. Belt 26 is assisted in restraining thestructure from abnormal throw by an endless belt 2F running aroundpulley l5 'and an idler 17 which latter is carried by a stand 18 mountedupon a baseplate 19 provided with set-screws 20 and strain the structurefrom lunging,' an endless elementrunning around the pulley and extendingin an opposite direction from the first-mentioned element to assist thesame only in restraining the structure from lunging, a support adjacentthe pulley for the second endless element, and means for adjusting saidsupport.

In testimony whereof I afiix my signature, in the presence of twowitnesses.

GEORGENV. COMES. Witnesses:

HENRY BAUM, HARRY T. LAFFIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

' 7 Washington, D. C.

